o/d problem

[vibe13]

hello everyone i,m having a little problem with my 03 vibe and was wondering if you guys can help me out with this thanks. something is wrong with the o/d, when i turn it on.it doesnt feel like before.what i mean by before? is so not strong .before my rmp used to go kinda high now it only goes about a few little line .CAN THE O/D GET BAD????????

[jkm311]

Turning your overdrive ON should make your RPMs drop, not spike. Only when you turn it OFF should they rev up. How fast are you going? You won't notice much of a difference below 30 or 35 MPH.

[vibe13]

thank you .i see what you mean now ,about turn it on when im passing 35 or 45 mpr .your right about it doesnt make not alot of different.thanks JKM311

[j42.snyder]

O/D is defaulted to "ON". Pushing the button will disable it, preventing the transmission from shifting past 3rd.O/D is just 4th gear in the transmission. Some people seem to have this confused with the transmission downshifting for passing power. From what I've read, the shift points of the 4 speeds are different when the transmission is cold. They will hold onto a gear longer before upshifting during "normal" driving, but will also limit engine RPM under heavier acceleration before it's warmed up. This sounds like what's happening here - although I'm not sure just how "cold" it's getting in Florida these days...

[jkm311]

Quote, originally posted by j42.snyder »O/D is defaulted to "ON". Pushing the button will disable it, preventing the transmission from shifting past 3rd.O/D is just 4th gear in the transmission.Yup. Spot on. Which explains why nothing is noticed in low speeds! Vibe13, did this explain it for you? My guess is you were disengaging OD when you had reached higher MPH in the past, and maybe tried it recently when you were just coasting along in much slower speeds.

[vibe13]

yah i see what yaw mean . i was driven on high RMP so when i turn on the o/d didnt feel no big different but now i know because of yaw thanks